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Drain (v. t.) To draw off by degrees; to cause to flow gradually out or off; hence, to cause the exhaustion of.
Drain (v. t.) To exhaust of liquid contents by drawing them off; to make gradually dry or empty; to remove surface water, as from streets, by gutters, etc.; to deprive of moisture; hence, to exhaust; to empty of wealth, resources, or the like; as, to drain a country of its specie.
Drain (v. t.) To filter.
Drain (v. i.) To flow gradually; as, the water of low ground drains off.
Drain (v. i.) To become emptied of liquor by flowing or dropping; as, let the vessel stand and drain.
Drain (n.) The act of draining, or of drawing off; gradual and continuous outflow or withdrawal; as, the drain of specie from a country.
Drain (n.) That means of which anything is drained; a channel; a trench; a water course; a sewer; a sink.
Drain (n.) The grain from the mashing tub; as, brewers' drains.